Human Impacts on Oceans

Multiple Choice

How do humans depend on oceans?

• Humans rely on oceans for internet connectivity.
• Oceans are primarily used for agriculture.
• Oceans are a source of fresh water for drinking.
• Humans depend on oceans for food, climate regulation, transportation, resources, and recreation.

Multiple Choice

Who gets affected by ocean acidification?

• humans

• marine animals

• neither

• humans and marine animals

Multiple Choice

LESS Co2 (carbon dioxide) in the air causes the water to be _________ acidic.

• MORE

• LESS

Multiple Choice

Carbon dioxide and seawater combine to form

• calcium carbonate
• carbon monoxide
• carbonic acid 

Multiple Select

Name two ways that we can help keep our oceans healthy.

• Stop overfishing

• recycle/lower pollution

• travel to another country

• stop tsunamis

• add water to the oceans from our lakes.

Multiple Choice

An example of a non-point solution is 

• waste water from leaking pipe
• fertilizer runoff from lawns

Multiple Choice

An example of point source pollution is

• trash floating in the ocean
• oil spilling from a supertanker

Multiple Choice

An algae bloom in a water system is most likely caused by

• high oxygen levels in the water
• large amounts of nitrates in runoff

Multiple Choice

Increase in temperature stimulates algae to make toxins.

• TRUE

• FALSE

Multiple Choice

Like plants, algae

• have roots and stems

• can photosynthesize

• have green leaves

Multiple Choice

What is algae bloom?

• Plants bloom early down stream

• Water becomes cloudy

• Too much of nutrients

• Extremely rapid growth of algea

Multiple Select

A rapid growth of algae caused by too much fertilizer can cause... (choose 2)

• A reduction of oxygen levels in the water.

• Water that can support more life.

• Waters that are deadly for animals

• An increase in oxygen levels.

Multiple Choice

How do humans negatively impact oceans?

• Humans negatively impact oceans through pollution, overfishing, habitat destruction, climate change, and invasive species.
• Humans improve ocean health through conservation efforts.
• Humans have no effect on ocean ecosystems.
• Humans only impact oceans through recreational activities.

Multiple Choice

How do humans positively impact oceans?

• By polluting the water with waste
• By overfishing and depleting resources
• By ignoring marine conservation efforts
• Humans positively impact oceans by engaging in conservation and sustainable practices.

Multiple Choice

How does the ocean provide oxygen?

• The ocean provides oxygen through photosynthesis by marine plants, especially phytoplankton.
• Oxygen is released from underwater volcanoes.
• Marine animals produce oxygen through respiration.
• The ocean absorbs oxygen from the atmosphere.

Multiple Choice

How does the ocean impact world economy?

• The ocean primarily impacts the economy through agriculture.
• The ocean contributes to the world economy by supporting fisheries, tourism, shipping, and natural resource extraction.

• The ocean has no effect on the world economy.
• The ocean only affects local economies, not global ones.

Multiple Choice

How does the ocean control CO₂ levels?

• The ocean controls CO₂ levels by absorbing it from the atmosphere and storing it through plant photosynthesis.

• The ocean only absorbs CO₂ from underwater volcanic activity.

• The ocean has no effect on CO₂ levels in the atmosphere.

• The ocean releases CO₂ into the atmosphere during storms.

Multiple Choice

Why would temperatures on Earth be more extreme without oceans?

• Without oceans, the atmosphere would be thicker and trap heat.
• Oceans create more clouds, leading to cooler weather.
• Oceans absorb sunlight, causing cooler temperatures.
• Temperatures on Earth would be more extreme without oceans due to the lack of heat regulation through ocean currents.

Categorize

Options (10)

50% of world's oxygen comes from ocean

freshwater from water cycle

oceans regulate temperature on Earth

boating and recreation

medicines produced from ocean life

17% of edible meat comes from oceans

using CO₂ to build shells

oxygen is dissolved back into ocean water

coral reefs provide habitat

Drag the text boxes and images to the appropriate part of the chart.

Benefits Humans ONLY

BOTH Humans and Environment Benefit

Benefits Ecosystems ONLY

Categorize

Options (9)

Build Artificial Reefs

Fertilizer on lawns and fields

invasive species introduced to water

Conserve resources

Proper disposal of chemicals

reduce point-source pollution

overfishing

oil spills

Categorize the impact as positive or negative impacts to the oceans

POSITIVE IMPACT

NEGATIVE IMPACT

Multiple Choice

Why might plastic pollution, be harmful for organisms like turtles?

• Plastic pollution helps turtles build their nests.

• Plastic pollution provides nutrients for turtles.

• Plastic pollution has no effect on turtle behavior.

• Plastic pollution can block stomachs and cause toxic exposure in turtles.

Multiple Choice

What is the Great Pacific Garbage Patch?

• A popular tourist destination in Hawaii.
• A type of ocean current that circulates debris.
• A marine reserve for endangered species.
• A massive area in the North Pacific Ocean filled with plastic waste and debris.

Match

Match the following types of pollution to their descriptions.

• Coal power plants and other industrial facilities emit mercury that leaches into the ocean.

• Road salt, gasoline, and auto oil wash into rivers and oceans during rainfall.

• Sediment and fertilizer wash into rivers and oceans, disrupting the ecosystem. 

mercury and other heavy metal waste

road runoff

farm and lawn fertilizer

• mercury and other heavy metal waste

• road runoff

• farm and lawn fertilizer

Multiple Choice

What effect can lawn fertilizer have on algae growth?

• Lawn fertilizer can promote algae growth by providing excess nutrients.
• Lawn fertilizer only affects plant growth, not algae.
• Lawn fertilizer can reduce algae growth by limiting nutrients.
• Lawn fertilizer has no effect on algae growth.

Multiple Choice

How does excess CO₂ (Carbon Dioxide) in the atmosphere impact oceans?

• Excess CO₂ increases ocean temperatures, promoting coral growth.

• Excess CO₂ has no effect on ocean life or ecosystems.

• Excess CO₂ leads to clearer waters, benefiting marine visibility.

• Excess CO₂ causes ocean acidification, harming marine life and ecosystems.

Multiple Choice

How does offshore drilling impact oceans?

• Offshore drilling increases fish populations and biodiversity.
• Offshore drilling negatively impacts oceans by causing oil spills, habitat destruction, and water pollution.
• Offshore drilling has no effect on marine life or ecosystems.
• Offshore drilling improves ocean health by creating artificial reefs.

Labelling

Label each box with the human activity.  

Drag labels to their correct position on the image

poor solid waste management

industrial waste

runoff/ fertilizer pollution

oil drilling/ mining

overfishing